. >> we use it to move gas from canada into the central valley. so it's under a lot of pressure and it carries large volumes of the gas. >> reporter: several blocks around folsom boulevard and hazel, near the scene were closed offer for hours. a nearby furniture store wooz evacuated. >> the company came through the entrance and said kuala 911 we have an explosion and fire. >> reporter: officers say for the driller on the rig it was a close call. >> these guys are very, very lucky. you can smell gas right away and anything around it can ignite it, even the drill can ignite it. >> reporter: it took two hours for the fire to burn itself out. minutes later, highway 50 re- opened and traffic got going again. investigators say the gas line was supposed to be marked, and wondered why the drill operator didn't know it was there. the scene was sale sealed offs a crime scene, in case there are criminal charge. >> when we come back on second, a backhoe hitted a buried powerline, but how did this one turn so deadly. and a bit later, fighting refinery fires an